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tipc: add peer remove functionality

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This enables a user to remove an offline peer from the kernel data
structures. This could for example be useful when deliberately scaling
in peer nodes in a cloud environment.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
This commit is contained in:
Richard Alpe 2016-01-05 10:57:40 +01:00 committed by Stephen Hemminger
parent 8f0777a857
commit f9dec657e4
12 changed files with 177 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/tipc_netlink.h
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@ -56,6 +56,7 @@ enum {
TIPC_NL_NET_GET,
TIPC_NL_NET_SET,
TIPC_NL_NAME_TABLE_GET,
TIPC_NL_PEER_REMOVE,
__TIPC_NL_CMD_MAX,
TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1

1
man/man8/tipc-bearer.8
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@ -218,6 +218,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-media (8),
.BR tipc-nametable (8),
.BR tipc-node (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

1
man/man8/tipc-link.8
View File

@ -213,6 +213,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-bearer (8),
.BR tipc-nametable (8),
.BR tipc-node (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

1
man/man8/tipc-media.8
View File

@ -74,6 +74,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-link (8),
.BR tipc-nametable (8),
.BR tipc-node (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

1
man/man8/tipc-nametable.8
View File

@ -87,6 +87,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-link (8),
.BR tipc-media (8),
.BR tipc-node (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

1
man/man8/tipc-node.8
View File

@ -59,6 +59,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-link (8),
.BR tipc-media (8),
.BR tipc-nametable (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

52
man/man8/tipc-peer.8 Normal file
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@ -0,0 +1,52 @@
.TH TIPC-PEER 8 "04 Dec 2015" "iproute2" "Linux"
.\" For consistency, please keep padding right aligned.
.\" For example '.B "foo " bar' and not '.B foo " bar"'
.SH NAME
tipc-peer \- modify peer information
.SH SYNOPSIS
.ad l
.in +8
.ti -8
.B tipc peer remove address
.IR ADDRESS
.SH OPTIONS
Options (flags) that can be passed anywhere in the command chain.
.TP
.BR "\-h" , " --help"
Show help about last valid command. For example
.B tipc peer --help
will show peer help and
.B tipc --help
will show general help. The position of the option in the string is irrelevant.
.SH DESCRIPTION
.SS Peer remove
Remove an offline peer node from the local data structures. The peer is
identified by its
.B address
.SH EXIT STATUS
Exit status is 0 if command was successful or a positive integer upon failure.
.SH SEE ALSO
.BR tipc (8),
.BR tipc-bearer (8),
.BR tipc-link (8),
.BR tipc-media (8),
.BR tipc-nametable (8),
.BR tipc-node (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS
Report any bugs to the Network Developers mailing list
.B <netdev@vger.kernel.org>
where the development and maintenance is primarily done.
You do not have to be subscribed to the list to send a message there.
.SH AUTHOR
Richard Alpe <richard.alpe@ericsson.com>

1
man/man8/tipc.8
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@ -87,6 +87,7 @@ Exit status is 0 if command was successful or a positive integer upon failure.
.BR tipc-media (8),
.BR tipc-nametable (8),
.BR tipc-node (8),
.BR tipc-peer (8),
.BR tipc-socket (8)
.br
.SH REPORTING BUGS

2
tipc/Makefile
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@ -6,7 +6,7 @@ TIPCOBJ=bearer.o \
media.o misc.o \
msg.o nametable.o \
node.o socket.o \
tipc.o
peer.o tipc.o
include ../Config

93
tipc/peer.c Normal file
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@ -0,0 +1,93 @@
/*
* peer.c TIPC peer functionality.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Richard Alpe <richard.alpe@ericsson.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <linux/tipc_netlink.h>
#include <linux/tipc.h>
#include <linux/genetlink.h>
#include <libmnl/libmnl.h>
#include "cmdl.h"
#include "msg.h"
#include "misc.h"
#include "peer.h"
static int cmd_peer_rm_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
char *str;
uint32_t addr;
struct nlattr *nest;
char buf[MNL_SOCKET_BUFFER_SIZE];
if ((cmdl->argc != cmdl->optind + 1) || help_flag) {
fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
cmdl->argv[0]);
return -EINVAL;
}
str = shift_cmdl(cmdl);
addr = str2addr(str);
if (!addr)
return -1;
if (!(nlh = msg_init(buf, TIPC_NL_PEER_REMOVE))) {
fprintf(stderr, "error, message initialisation failed\n");
return -1;
}
nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr);
mnl_attr_nest_end(nlh, nest);
return msg_doit(nlh, NULL, NULL);
}
static void cmd_peer_rm_help(struct cmdl *cmdl)
{
fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
cmdl->argv[0]);
}
static int cmd_peer_rm(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
const struct cmd cmds[] = {
{ "address", cmd_peer_rm_addr, cmd_peer_rm_help },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}
void cmd_peer_help(struct cmdl *cmdl)
{
fprintf(stderr,
"Usage: %s peer COMMAND [ARGS] ...\n\n"
"COMMANDS\n"
" remove - Remove an offline peer node\n",
cmdl->argv[0]);
}
int cmd_peer(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
void *data)
{
const struct cmd cmds[] = {
{ "remove", cmd_peer_rm, cmd_peer_rm_help },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}

21
tipc/peer.h Normal file
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@ -0,0 +1,21 @@
/*
* peer.h TIPC peer functionality.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Richard Alpe <richard.alpe@ericsson.com>
*/
#ifndef _TIPC_PEER_H
#define _TIPC_PEER_H
extern int help_flag;
int cmd_peer(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
void *data);
void cmd_peer_help(struct cmdl *cmdl);
#endif

3
tipc/tipc.c
View File

@ -20,6 +20,7 @@
#include "socket.h"
#include "media.h"
#include "node.h"
#include "peer.h"
#include "cmdl.h"
int help_flag;
@ -39,6 +40,7 @@ static void about(struct cmdl *cmdl)
" media - Show or modify media\n"
" nametable - Show nametable\n"
" node - Show or modify node related parameters\n"
" peer - Peer related operations\n"
" socket - Show sockets\n",
cmdl->argv[0]);
}
@ -59,6 +61,7 @@ int main(int argc, char *argv[])
{ "media", cmd_media, cmd_media_help},
{ "nametable", cmd_nametable, cmd_nametable_help},
{ "node", cmd_node, cmd_node_help},
{ "peer", cmd_peer, cmd_peer_help},
{ "socket", cmd_socket, cmd_socket_help},
{ NULL }
};